I´ve read two versions.
- Same offer, in different traffic source, can perform very differently.
- At the beginning work with just one traffic source to master in.
Both make sense for me, but its seems to contradict.
Any light about that?
Thanks
Hello cattmain.
Basically the only BIG reason we recommend new people to stick to 1 (or very limited amount) network or vertical, is to make sure they don't jump from one thing to another without actually learning how to work with the initial choice.
You will not get your first campaign to profit most likely, but you need to learn the basics with it - how to track, how to bid, how to setup campaigns etc ... and all of this is easier to learn when the other options remain the same - hence the recommendation to stay on one source at the beginning.
As soon as you are confident enough about what you are doing, feel free to start using more sources, more verticals etc ... Very often it's actually needed, not every type of traffic is for everyone, so you might very well start with POPs but only get profitable when you switch to a different traffic type.
But for the starts, everything is easier to understand when you stick to one place.
This question is popping out all the time, let me write a long thread on the subject, so I can send people directly to it in the future 
Matej.
@matuloo, understand it. Very clear.
I was reading, right now, a follow along where @vortex wrote:
"Having read so many follow-along on this forum, and having spoken to so many people in this industry, I would say that having the willingness to launch many camps to test many offers and angles is one of the main keys for success in this industry. "
Thank you for your patience